def test_cause_error(self): with self.assertRaises(ConfigurationException): sim.setup(timestep=1.0) sim.set_number_of_neurons_per_core(sim.IF_curr_exp, 100) pop_1 = sim.Population(1, sim.IF_curr_exp(), label="pop_1") input = sim.Population(1, sim.SpikeSourceArray(spike_times=[0]), label="input") sim.Projection(input, pop_1, sim.OneToOneConnector(), synapse_type=sim.StaticSynapse(weight=5, delay=1)) pop_1.record(["v"]) simtime = 10 sim.run(simtime) pop_1.get_data(variables=["spikes"])
def fixedpost_population_views(self): sim.setup(timestep=1.0) in_pop = sim.Population(4, sim.SpikeSourceArray([0]), label="in_pop") pop = sim.Population(4, sim.IF_curr_exp(), label="pop") rng = NumpyRNG(seed=1) conn = sim.Projection(in_pop[0:3], pop[1:4], sim.FixedNumberPostConnector(2, rng=rng), sim.StaticSynapse(weight=0.5, delay=2)) sim.run(1) weights = conn.get(['weight', 'delay'], 'list') sim.end() # The fixed seed means this gives the same answer each time target = [(0, 1, 0.5, 2.0), (0, 3, 0.5, 2.0), (1, 1, 0.5, 2.0), (1, 3, 0.5, 2.0), (2, 1, 0.5, 2.0), (2, 2, 0.5, 2.0)] self.assertEqual(weights.tolist(), target)
def different_views(self): ps = PatternSpiker() sim.setup(timestep=1) simtime = 100 pop = ps.create_population(sim, n_neurons=10, v_rec_indexes=[2, 4, 6, 8], label="test") sim.run(simtime) ps.check(pop, simtime, v_rec_indexes=[2, 3, 4], is_view=True, missing=True) sim.end()
def do_run(): # Setup p.setup(timestep=1.0) # FPGA Retina - Down Polarity p.Population(2000, p.external_devices.ArbitraryFPGADevice, { 'fpga_link_id': 12, 'fpga_id': 1, 'label': "bacon" }, label='External sata thing') p.run(1000) p.end()
def do_run(): # Setup p.setup(timestep=1.0) p.Population( None, p.external_devices.ArbitraryFPGADevice( 2000, fpga_link_id=12, fpga_id=1, label="bacon")) p.Population( None, p.external_devices.ArbitraryFPGADevice( 2000, fpga_link_id=11, fpga_id=1, label="bacon")) p.run(1000) p.end()
def do_run(self): with LogCapture() as lc: sim.setup(1.0) pop = sim.Population(1, sim.IF_curr_exp, {}, label="pop") inp = sim.Population(1, sim.SpikeSourceArray(spike_times=[0]), label="input") sim.Projection(inp, pop, sim.OneToOneConnector(), synapse_type=sim.StaticSynapse(weight=5)) sim.run(10) self.assert_logs_messages(lc.records, "Working out if machine is booted", 'INFO', 1)
def change_pre_reset(self): sim.setup(1.0) pop = sim.Population(1, sim.IF_curr_exp, {}, label="pop") pop.set(i_offset=1.0) pop.set(tau_syn_E=1) pop.record(["v"]) sim.run(5) v1 = pop.spinnaker_get_data('v') self.check_from_65(v1) pop.set(tau_syn_E=1) sim.reset() sim.run(5) v2 = pop.spinnaker_get_data('v') sim.end() self.check_from_65(v2)
def do_one_to_one_conductance_test(self, neurons_per_core, pre_size, post_size, weight, delay): sim.setup(1.0) sim.set_number_of_neurons_per_core(sim.IF_cond_exp, neurons_per_core) pre = sim.Population(pre_size, sim.IF_cond_exp()) post = sim.Population(post_size, sim.IF_cond_exp()) proj = sim.Projection(pre, post, sim.OneToOneConnector(), sim.StaticSynapse(weight=weight, delay=delay)) sim.run(0) conns = proj.get(["weight", "delay"], "list") sim.end() for pre, post, w, d in conns: assert pre == post assert numpy.allclose(w, weight, rtol=0.0001) assert d == delay
def __run_sim(self, run_times, populations, projections, run_count, spike_times_list, extract_between_runs, get_spikes, record_7, get_v, record_v_7, get_gsyn_exc, record_gsyn_exc_7, get_gsyn_inh, record_gsyn_inh_7, record_input_spikes, record_input_spikes_7, get_all, get_weights, get_delays, new_pop, n_neurons, cell_class, cell_params, weight_to_spike, set_between_runs, reset): results = () for runtime in run_times[:-1]: # This looks strange but is to allow getting data before run if runtime > 0: p.run(runtime) run_count += 1 if extract_between_runs: self._get_data(populations[0], populations[1], get_spikes, record_7, get_v, record_v_7, get_gsyn_exc, record_gsyn_exc_7, get_gsyn_inh, record_gsyn_inh_7, record_input_spikes, record_input_spikes_7, get_all) self._get_weight_delay(projections[0], get_weights, get_delays) if new_pop: populations.append( p.Population( n_neurons, cell_class(**cell_params), label='pop_2')) injection_connection = [(n_neurons - 1, 0, weight_to_spike, 1)] new_projection = p.Projection( populations[0], populations[2], p.FromListConnector(injection_connection), p.StaticSynapse(weight=weight_to_spike, delay=1)) projections.append(new_projection) if spike_times_list is not None: populations[1].set(spike_times=spike_times_list[run_count]) for (pop, name, value) in set_between_runs: new_values = {name: value} populations[pop].set(**new_values) if reset: p.reset() p.run(run_times[-1]) return results
def test_tun(self): with self.assertRaises(SpinnmanTimeoutException): p.setup(timestep=1.0, min_delay=1.0, max_delay=144.0) nNeurons = 200 # number of neurons in each population cell_params_lif = { 'cm': 0.25, 'i_offset': 0.0, 'tau_m': 20.0, 'tau_refrac': 2.0, 'tau_syn_E': 5.0, 'tau_syn_I': 5.0, 'v_reset': -70.0, 'v_rest': -65.0, 'v_thresh': -50.0 } populations = list() projections = list() weight_to_spike = 2.0 delay = 17 loopConnections = list() for i in range(0, nNeurons): singleConnection = (i, ((i + 1) % nNeurons), weight_to_spike, delay) loopConnections.append(singleConnection) injectionConnection = [(0, 0, weight_to_spike, 1)] spikeArray = {'spike_times': [[0]]} populations.append( p.Population(nNeurons, FakeIFCurrExpDataHolder, cell_params_lif, label='pop_1')) populations.append( p.Population(1, p.SpikeSourceArray, spikeArray, label='inputSpikes_1')) projections.append( p.Projection(populations[0], populations[0], p.FromListConnector(loopConnections))) projections.append( p.Projection(populations[1], populations[0], p.FromListConnector(injectionConnection))) populations[0].record("v") populations[0].record("gsyn_exc") populations[0].record("spikes") p.run(5000) p.end()
def do_run(): """ test that tests the printing of v from a pre determined recording :return: """ p.setup(timestep=1.0, min_delay=1.0, max_delay=144.0) n_neurons = 128 * 128 # number of neurons in each population p.set_number_of_neurons_per_core(p.IF_cond_exp, 256) cell_params_lif = {'cm': 0.25, 'i_offset': 0.0, 'tau_m': 20.0, 'tau_refrac': 2.0, 'tau_syn_E': 5.0, 'tau_syn_I': 5.0, 'v_reset': -70.0, 'v_rest': -65.0, 'v_thresh': -50.0, 'e_rev_E': 0., 'e_rev_I': -80. } populations = list() projections = list() weight_to_spike = 0.035 delay = 17 spikes = read_spikefile('test.spikes', n_neurons) spike_array = {'spike_times': spikes} populations.append(p.Population( n_neurons, p.SpikeSourceArray, spike_array, label='inputSpikes_1')) populations.append(p.Population( n_neurons, p.IF_cond_exp, cell_params_lif, label='pop_1')) projections.append(p.Projection( populations[0], populations[1], p.OneToOneConnector(), synapse_type=p.StaticSynapse(weight=weight_to_spike, delay=delay))) populations[1].record("spikes") p.run(1000) spikes = populations[1].spinnaker_get_data('spikes') p.end() return spikes
def test_run(self): sim.setup() sim.Population(3, sim.SpikeSourcePoisson, {"rate": 100}) p2 = sim.Population(3, sim.SpikeSourceArray, {"spike_times": [[10.0], [20.0], [30.0]]}) p3 = sim.Population(4, sim.IF_cond_exp, {}) sim.Projection( p2, p3, sim.FromListConnector([(0, 0, 0.1, 1.0), (1, 1, 0.1, 1.0), (2, 2, 0.1, 1.0)])) sim.run(100.0) sim.end()
def do_run(self): sim.setup(timestep=1.0) sim.set_number_of_neurons_per_core(sim.IF_curr_exp, neurons_per_core) input_spikes = list(range(0, simtime - 100, 10)) expected_spikes = len(input_spikes) input = sim.Population( 1, sim.SpikeSourceArray(spike_times=input_spikes), label="input") pop_1 = sim.Population(n_neurons, sim.IF_curr_exp(), label="pop_1") sim.Projection(input, pop_1, sim.AllToAllConnector(), synapse_type=sim.StaticSynapse(weight=5, delay=1)) pop_1.record(["spikes", "v", "gsyn_exc"]) sim.run(simtime//4*3) sim.run(simtime//4) check_data(pop_1, expected_spikes, simtime) sim.end()
def testReset_add(self): sim.setup(timestep=1.0) sim.set_number_of_neurons_per_core(sim.IF_curr_exp, 1) input = sim.Population(1, sim.SpikeSourceArray(spike_times=[0]), label="input") pop_1 = sim.Population(2, sim.IF_curr_exp(), label="pop_1") sim.Projection(input, pop_1, sim.AllToAllConnector(), synapse_type=sim.StaticSynapse(weight=5, delay=1)) sim.run(10) sim.Population(2, sim.IF_curr_exp(), label="pop_2") with self.assertRaises(NotImplementedError): sim.run(10)
def check_rates(self, rates, seconds): n_neurons = 100 sim.setup(timestep=1.0) inputs = {} for rate in rates: params = {"rate": rate} input = sim.Population(n_neurons, sim.SpikeSourcePoisson, params, label='inputSpikes_{}'.format(rate)) input.record("spikes") inputs[rate] = input sim.run(seconds * 1000) for rate in rates: self.check_spikes(inputs[rate], rate * seconds) sim.end()
def do_run(nNeurons, timestep): spike_list = {'spike_times': SPIKE_TIMES} print(spike_list) p.setup(timestep=timestep, min_delay=timestep, max_delay=timestep * 10) pop = p.Population(nNeurons, p.SpikeSourceArray, spike_list, label='input') pop.record("spikes") p.run(200) neo = pop.get_data("spikes") p.end() return neo
def test_using_static_synapse_doubles(self): sim.setup(timestep=1.0) input = sim.Population(2, sim.SpikeSourceArray([0]), label="input") pop = sim.Population(2, sim.IF_curr_exp(), label="pop") as_list = [(0, 0), (1, 1)] conn = sim.Projection( input, pop, sim.FromListConnector(as_list), sim.StaticSynapse(weight=[0.7, 0.3], delay=[3, 33])) sim.run(1) weights = conn.get(['weight', 'delay'], 'list') target = [(0, 0, 0.7, 3), (1, 1, 0.3, 33)] for i in range(2): for j in range(2): self.assertAlmostEqual(weights[i][j], target[i][j], places=3) sim.end()
def structural_eliminate_to_empty(): p.setup(1.0) stim = p.Population(9, p.SpikeSourceArray(range(10)), label="stim") # These populations should experience elimination pop = p.Population(9, p.IF_curr_exp(), label="pop") # Make a full list # Elimination with random selection (0 probability formation) proj = p.Projection( stim, pop, p.AllToAllConnector(), p.StructuralMechanismStatic( partner_selection=p.RandomSelection(), formation=p.DistanceDependentFormation([3, 3], 0.0), elimination=p.RandomByWeightElimination(4.0, 1.0, 1.0), f_rew=1000, initial_weight=4.0, initial_delay=3.0, s_max=9, seed=0, weight=0.0, delay=1.0)) pop.record("rewiring") p.run(1000) # Get the final connections conns = list(proj.get(["weight", "delay"], "list")) rewiring = pop.get_data("rewiring") formation_events = rewiring.segments[0].events[0] elimination_events = rewiring.segments[0].events[1] num_forms = len(formation_events.times) num_elims = len(elimination_events.times) first_elim = elimination_events.labels[0] p.end() # These should have no connections since all should be eliminated assert (len(conns) == 0) assert (num_elims == 81) assert (num_forms == 0) assert (first_elim == "7_5_elimination")
def do_run(self): p.setup(timestep=1.0, min_delay=1.0, max_delay=1.0) cell_params = { 'i_offset': .1, 'tau_refrac': 3.0, 'v_rest': -65.0, 'v_thresh': -51.0, 'tau_syn_E': 2.0, 'tau_syn_I': 5.0, 'v_reset': -70.0, 'e_rev_E': 0., 'e_rev_I': -80. } # setup test population if_pop = p.Population(1, p.IF_cond_exp, cell_params) # setup spike sources spike_times = [20., 40., 60.] exc_pop = p.Population(1, p.SpikeSourceArray, {'spike_times': spike_times}) inh_pop = p.Population(1, p.SpikeSourceArray, {'spike_times': [120, 140, 160]}) # setup excitatory and inhibitory connections listcon = p.FromListConnector([(0, 0, 0.05, 1.0)]) p.Projection(exc_pop, if_pop, listcon, receptor_type='excitatory') p.Projection(inh_pop, if_pop, listcon, receptor_type='inhibitory') # setup recorder if_pop.record(["v"]) p.run(100) p.reset() if_pop.initialize(v=-65) exc_pop.set(spike_times=[]) inh_pop.set(spike_times=spike_times) p.run(100) # read out voltage and plot neo = if_pop.get_data("all") p.end() v = neo_convertor.convert_data(neo, "v", run=0) v2 = neo_convertor.convert_data(neo, "v", run=1) self.assertGreater(v[22][2], v[21][2]) self.assertGreater(v[42][2], v[41][2]) self.assertGreater(v[62][2], v[61][2]) self.assertLess(v2[22][2], v2[21][2]) self.assertLess(v2[42][2], v2[41][2]) self.assertLess(v2[62][2], v2[61][2])
def do_run(nNeurons): p.setup(timestep=0.1, min_delay=1.0, max_delay=7.5) p.set_number_of_neurons_per_core(p.IF_curr_exp, 100) cell_params_lif = {'cm': 0.25, 'i_offset': 0.0, 'tau_m': 20.0, 'tau_refrac': 2.0, 'tau_syn_E': 6, 'tau_syn_I': 6, 'v_reset': -70.0, 'v_rest': -65.0, 'v_thresh': -55.4} populations = list() projections = list() weight_to_spike = 12 injection_delay = 1 delay = 1 spikeArray = {'spike_times': [[0, 10, 20, 30]]} populations.append(p.Population(1, p.SpikeSourceArray, spikeArray, label='pop_0')) populations.append(p.Population(nNeurons, p.IF_curr_exp, cell_params_lif, label='pop_1')) populations.append(p.Population(nNeurons, p.IF_curr_exp, cell_params_lif, label='pop_2')) connector = p.AllToAllConnector() synapse_type = p.StaticSynapse(weight=weight_to_spike, delay=injection_delay) projections.append(p.Projection(populations[0], populations[1], connector, synapse_type=synapse_type)) connector = p.OneToOneConnector() synapse_type = p.StaticSynapse(weight=weight_to_spike, delay=delay) projections.append(p.Projection(populations[1], populations[2], connector, synapse_type=synapse_type)) populations[1].record("v") populations[1].record("spikes") p.run(100) neo = populations[1].get_data(["v", "spikes"]) v = neo_convertor.convert_data(neo, name="v") spikes = neo_convertor.convert_spikes(neo) p.end() return (v, spikes)
def do_run(self): sim.setup(timestep=1.0, n_boards_required=1) sim.set_number_of_neurons_per_core(sim.IF_curr_exp, 100) machine = globals_variables.get_simulator().machine input1 = sim.Population(1, sim.SpikeSourceArray(spike_times=[0]), label="input1") input2 = sim.Population(1, sim.SpikeSourceArray(spike_times=[0]), label="input2") input3 = sim.Population(1, sim.SpikeSourceArray(spike_times=[0]), label="input3") input4 = sim.Population(1, sim.SpikeSourceArray(spike_times=[0]), label="input4") # Make sure there is stuff at the cores specified in the cfg file input1.set_constraint(ChipAndCoreConstraint(0, 0, 1)) input2.set_constraint(ChipAndCoreConstraint(0, 0, 3)) # While there must be a chip 0,0 chip 1,1 could be missing if machine.is_chip_at(1, 1): input3.set_constraint(ChipAndCoreConstraint(1, 1, 1)) # Make sure there is stuff at a core not specified in the cfg file input4.set_constraint(ChipAndCoreConstraint(0, 0, 2)) sim.run(500) provenance_files = self.get_app_iobuf_files() sim.end() self.assertIn("iobuf_for_chip_0_0_processor_id_1.txt", provenance_files) self.assertNotIn("iobuf_for_chip_0_0_processor_id_2.txt", provenance_files) self.assertIn("iobuf_for_chip_0_0_processor_id_3.txt", provenance_files) self.assertNotIn("iobuf_for_chip_0_0_processor_id_4.txt", provenance_files) if machine.is_chip_at(1, 1): self.assertIn("iobuf_for_chip_1_1_processor_id_1.txt", provenance_files) self.assertNotIn("iobuf_for_chip_1_1_processor_id_2.txt", provenance_files)
def check_other_connect(self, connections, with_replacement): sim.setup(1.0) pop1 = sim.Population(SOURCES, sim.IF_curr_exp(), label="pop1") pop2 = sim.Population(DESTINATIONS, sim.IF_curr_exp(), label="pop2") synapse_type = sim.StaticSynapse(weight=5, delay=1) projection = sim.Projection(pop1, pop2, sim.FixedNumberPostConnector( connections, with_replacement=with_replacement), synapse_type=synapse_type) sim.run(0) self.check_weights(projection, connections, with_replacement, allow_self_connections=True) sim.end()
def test_check_connection_estimates(self): # Test that the estimates for connections per neuron/vertex work sim.setup(timestep=1.0) n_neurons = 25 pop1 = sim.Population(n_neurons, sim.IF_curr_exp(), label="pop_1") pop2 = sim.Population(n_neurons, sim.IF_curr_exp(), label="pop_2") projection = sim.Projection(pop1, pop2, sim.FixedNumberPostConnector(n_neurons // 2), synapse_type=sim.StaticSynapse(weight=5, delay=1)) simtime = 10 sim.run(simtime) weights = projection.get(["weight"], "list") self.assertEqual(n_neurons * int(n_neurons / 2), len(weights)) sim.end()
def do_run(nNeurons): p.setup(timestep=1, min_delay=1, max_delay=15) nNeurons = 1 # number of neurons in each population neuron_parameters = { 'cm': 0.25, 'i_offset': 2, 'tau_m': 10.0, 'tau_refrac': 2.0, 'tau_syn_E': 0.5, 'tau_syn_I': 0.5, 'v_reset': -65.0, 'v_rest': -65.0, 'v_thresh': -50.0 } populations = list() populations.append( p.Population(nNeurons, p.IF_curr_exp, neuron_parameters, label='pop_1')) populations.append( p.Population(nNeurons, p.IF_curr_exp, neuron_parameters, label='pop_2')) populations[1].add_placement_constraint(x=1, y=0) populations[0].record("v") populations[0].record("gsyn_exc") populations[0].record("spikes") populations[1].record("v") populations[1].record("gsyn_exc") populations[1].record("spikes") p.run(100) v1 = populations[0].spinnaker_get_data("v") gsyn1 = populations[0].spinnaker_get_data("gsyn_exc") spikes1 = populations[0].spinnaker_get_data("spikes") v2 = populations[1].spinnaker_get_data("v") gsyn2 = populations[1].spinnaker_get_data("gsyn_exc") spikes2 = populations[1].spinnaker_get_data("spikes") p.end() return (v1, gsyn1, v2, gsyn2, spikes1, spikes2)
def recording_1_element(self): p.setup(timestep=1.0, min_delay=1.0, max_delay=144.0) n_neurons = 200 # number of neurons in each population p.set_number_of_neurons_per_core(p.IF_curr_exp, n_neurons / 2) cell_params_lif = { 'cm': 0.25, 'i_offset': 0.0, 'tau_m': 20.0, 'tau_refrac': 2.0, 'tau_syn_E': 5.0, 'tau_syn_I': 5.0, 'v_reset': -70.0, 'v_rest': -65.0, 'v_thresh': -50.0 } populations = list() projections = list() spike_array = {'spike_times': [[0]]} populations.append( p.Population(n_neurons, p.IF_curr_exp, cell_params_lif, label='pop_1')) populations.append( p.Population(1, p.SpikeSourceArray, spike_array, label='inputSpikes_1')) projections.append( p.Projection(populations[1], populations[0], p.AllToAllConnector())) populations[1].record("spikes") p.run(5000) spike_array_spikes = populations[1].spinnaker_get_data("spikes") boxed_array = numpy.zeros(shape=(0, 2)) boxed_array = numpy.append(boxed_array, [[0, 0]], axis=0) numpy.testing.assert_array_equal(spike_array_spikes, boxed_array) p.end()
def check_self_connect(self, connections, with_replacement, allow_self_connections): sim.setup(1.0) pop = sim.Population(DESTINATIONS, sim.IF_curr_exp(), label="pop") synapse_type = sim.StaticSynapse(weight=5, delay=1) projection = sim.Projection( pop, pop, sim.FixedNumberPreConnector( connections, with_replacement=with_replacement, allow_self_connections=allow_self_connections), synapse_type=synapse_type) sim.run(0) self.check_weights(projection, connections, with_replacement, allow_self_connections) sim.end()
def do_run(self): sim.setup(timestep=1.0) input_pop = sim.Population(1, sim.SpikeSourceArray(range( 0, run_time, 100)), label="input") test_pop = sim.Population(1, MyFullNeuron(), label="my_full_neuron") test_pop.record(['spikes', 'v']) sim.Projection(input_pop, test_pop, sim.AllToAllConnector(), receptor_type='excitatory', synapse_type=sim.StaticSynapse(weight=2.0)) sim.run(run_time) neo = test_pop.get_data('all') sim.end() self.check_results(neo, [501])
def do_run(): p.setup(1.0) inp = p.Population(100, p.SpikeSourcePoisson(rate=2, seed=417), label="input") inp.record("spikes") p.run(100) p.reset() inp.set(rate=30) p.run(100) p.end()
def test_run(self): p.setup() cell_params_lif = { 'cm': 0.25, 'i_offset': 0.0, 'tau_m': 20.0, 'tau_refrac': 2.0, 'tau_syn_E': 5.0, 'tau_syn_I': 5.0, 'v_reset': -70.0, 'v_rest': -65.0, 'v_thresh': -50.0 } pop = p.Population(10, p.IF_curr_exp(**cell_params_lif), label='test') p.run(100) pop.set(cm=0.30)
def record_all(self): sim.setup(timestep=1) simtime = 100 input = sim.Population(1, sim.SpikeSourceArray(spike_times=[0, 30]), label="input") pop = sim.Population(32, sim.IF_curr_exp(), label="pop") sim.Projection(input, pop, sim.AllToAllConnector(), synapse_type=sim.StaticSynapse(weight=5, delay=1)) pop.record("all") sim.run(simtime) neo = pop.get_data("all") pop.write_data(pickle_path, "all") io = PickleIO(filename=pickle_path) all_saved = io.read()[0] neo_compare.compare_blocks(neo, all_saved) assert len(neo.segments[0].spiketrains) > 0 assert len(neo.segments[0].filter(name="v")) > 0 assert len(neo.segments[0].filter(name="gsyn_exc")) > 0 spikes_neo = pop.get_data("spikes") pop.write_data(pickle_path, "spikes") io = PickleIO(filename=pickle_path) spikes_saved = io.read()[0] neo_compare.compare_blocks(spikes_neo, spikes_saved) assert len(spikes_neo.segments[0].spiketrains) > 0 assert len(spikes_neo.segments[0].filter(name="v")) == 0 assert len(spikes_neo.segments[0].filter(name="gsyn_exc")) == 0 v_neo = pop.get_data("v") pop.write_data(pickle_path, "v") io = PickleIO(filename=pickle_path) v_saved = io.read()[0] neo_compare.compare_blocks(v_neo, v_saved) assert len(v_neo.segments[0].spiketrains) == 0 assert len(v_neo.segments[0].filter(name="v")) > 0 assert len(v_neo.segments[0].filter(name="gsyn_exc")) == 0 gsyn_neo = pop.get_data("gsyn_exc") pop.write_data(pickle_path, "gsyn_exc") io = PickleIO(filename=pickle_path) gsyn_saved = io.read()[0] neo_compare.compare_blocks(gsyn_neo, gsyn_saved) assert len(gsyn_neo.segments[0].spiketrains) == 0 assert len(spikes_neo.segments[0].filter(name="v")) == 0 assert len(gsyn_neo.segments[0].filter(name="gsyn_exc")) > 0